Volkswagen has announced findings of approximately 430,000 affected vehicles with skewed carbon dioxide figures within their 2016 model line. The list has expanded to four gasoline engines.

The German automakers internal investigations into the 2016 models helped narrow down the number of implicated cars. Originally estimated at up to 800,000 units, the figures ended up at 430,046 across the company including VW, Audi, Skoda and Seat.

Greenpeace activists demonstrate at the entrance to the Volkswagen plant in Wolfsburg, central Germany, on November 9, 2015. Germany's consumers association wants auto giant Volkswagen to offer vouchers as a form of compensation to German customers affected by the massive pollution cheating scandal.

BERLIN, GERMANY: The fuel nozzle of a diesel pump deposits diesel fuel into a Volkswagen car at a petrol staiton on September 25, 2015 in Berlin, Germany. Volkswagen is seeking a new CEO following the recent resingation of Martin Winterkorn in the wake of allegations by the U.S. Environmental Protection Agency that the company had installed software into its diesel cars sold in the U.S. that manipulated emissions test results.

(Sean Gallup/Getty Images)

Volkswagen went on to list all the affected models and says they are informing the releveant authorities as well as importers and trading partners. Some of the impacted models include the VW Polo 1.4-liter, VW Polo 1.0-L TSI, Seat Ibiza, Seat Leon, Leon SC coupe 1.8-Liter TFSI, Leon Sport Tourer wagon 1.8-liter TFSI, and the VW Golf and Passat both with the 2.0-liter TFSI.

According to Bloomberg, the carmaker will inform German authorities on how to fix the 1.6-liter diesel engines with cheating software today.